Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol

Pagonis, Demetrios; Campuzano-Jost, Pedro; Guo, Hongyu; Day, Douglas A.; Schueneman, Melinda K.; Brown, Wyatt L.; Nault, Benjamin A.; Stark, Harald; Siemens, Kyla; Laskin, Alex; Piel, Felix; Tomsche, Laura; Wisthaler, Armin; Coggon, Matthew M.; Gkatzelis, Georgios I.; Halliday, Hannah S.; Krechmer, Jordan E.; Moore, Richard H.; Thomson, David S.; Warneke, Carsten; Wiggins, Elizabeth B.; Jimenez, Jose L.

doi:10.5194/amt-14-1545-2021

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Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol

2021
By Pagonis, Demetrios ; Campuzano-Jost, Pedro ; Guo, Hongyu ; ...
Source: Atmos. Meas. Tech., 14, 1545–1559

[PDF-2.88 MB]

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Details:

Journal Title:

Atmospheric Measurement Techniques
Personal Author:

Pagonis, Demetrios ; Campuzano-Jost, Pedro ; Guo, Hongyu ; Day, Douglas A. ; Schueneman, Melinda K. ; ... More +

Pagonis, Demetrios ; Campuzano-Jost, Pedro ; Guo, Hongyu ; Day, Douglas A. ; Schueneman, Melinda K. ; Brown, Wyatt L. ; Nault, Benjamin A. ; Stark, Harald ; Siemens, Kyla ; Laskin, Alex ; Piel, Felix ; Tomsche, Laura ; Wisthaler, Armin ; Coggon, Matthew M. ; Gkatzelis, Georgios I. ; Halliday, Hannah S. ; Krechmer, Jordan E. ; Moore, Richard H. ; Thomson, David S. ; Warneke, Carsten ; Wiggins, Elizabeth B. ; Jimenez, Jose L. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CSL (Chemical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; CSL (Chemical Sciences Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

We deployed an extractive electrospray ionization time-of-flight mass spectrometer (EESI-MS) for airborne measurements of biomass burning aerosol during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) study onboard the NASA DC-8 research aircraft. Through optimization of the electrospray working solution, active control of the electrospray region pressure, and precise control of electrospray capillary position, we achieved 1 Hz quantitative measurements of aerosol nitrocatechol and levoglucosan concentrations up to pressure altitudes of 7 km. The EESI-MS response to levoglucosan and nitrocatechol was calibrated for each flight, with flight-to-flight calibration variability of 60 % (1σ). Laboratory measurements showed no aerosol size dependence in EESI-MS sensitivity below particle geometric diameters of 400 nm, covering 82 % of accumulation-mode aerosol mass during FIREX-AQ. We also present a first in-field intercomparison of EESI-MS with a chemical analysis of aerosol online proton-transfer-reaction mass spectrometer (CHARON PTR-MS) and a high-resolution Aerodyne aerosol mass spectrometer (AMS). EESI-MS and CHARON PTR-MS levoglucosan concentrations were well correlated, with a regression slope of 0.94 (R2=0.77). AMS levoglucosan-equivalent concentrations and EESI-MS levoglucosan showed a greater difference, with a regression slope of 1.36 (R2=0.96), likely indicating the contribution of other compounds to the AMS levoglucosan-equivalent measurement. The total EESI-MS signal showed correlation (R2=0.9) with total organic aerosol measured by AMS, and the EESI-MS bulk organic aerosol sensitivity was 60 % of the sensitivity to levoglucosan standards.
Keywords:

[+]

Aeorols Mass Spectrometry Measurements
Source:

Atmos. Meas. Tech., 14, 1545–1559
DOI:

https://doi.org/10.5194/amt-14-1545-2021
Document Type:

Journal Article
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

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urn:sha256:6c0e1db6cef4a1ad961f9280e384cbe573e3c05a278aa2f14f3b3baf8ce0e699
Download URL:

https://repository.library.noaa.gov/view/noaa/40490/noaa_40490_DS1.pdf
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	Machine readable versin (XML)	xml
	Available dataset	htm

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